Yesterday, Shaenon said “A Skin Horse No-Prize to the first person who can figure out what color Volume 5 will be, and why!”
The first four volumes are blue (Munchkinland), red (Quadling Country), green (The Emerald City) and yellow (Winkie Country). That means Volume 5 will be purple, for Gillikin Country.

The canonically logical guess was wrong, so here are a couple from left field:
You’ve done four colors of the Olympic rings, which means Volume 5 will be black.
Or, you’ve done four of six colors of the gay-pride rainbow flag, so Volume 5 will be either purple or orange, and Volume 6 will be the other.
Yeah, I’ve got nothing.

Sweetheart works for the Department of Metahuman Affairs and she doesn’t believe that a sentient personification of a children’s entertainment company could exist? That’s pretty arbitrary of her. Possibly even capricious.

Don’t get the reference but I can address the question. I don’t think Sweetheart is dismissing Unity on the grounds that her story is unbelievable. She is dismissing Unity because she is Unity.
Oh, and mushrooms. And Breakfast!

You don’t have to be an admin. lawyer to understand the “arbitrary and capricious” standard for judicial review. You have to have paid attention in, well, if not law school, then the bar exam prep class.

If you add in artistic license, the pink represents magenta, and the lt blue represents cyan (are blue and cyan clashing colors?). Gold I haven’t figured out yet unless we are dealing in pigment shades and tints.

ANYWAY – my conjecture is that the primary 3 have been represented, and the Yellow has been shown, that leaves Cyan or Magenta for the next cover, possibly followed by white.

I’m (mentally) dabbling in philosophy and the concepts of pure and impure to include the Gold (pure metal) and Silver (pure or impure?) and the bit that white light blends all colors while all pigments run to black (in theory) but a mucky dark brown in practice.

AND of course I’m running on insufficient sleep so my brain is free-associating.

Probably for the same reason that UFOs tend to land in very remote areas with few reliable witnesses and leave very little actual evidence of their existence. (After all. when’s the last time this happened in a large city?)

Now I have to look up the order for . . . okay, it goes the Blue Fairy Book, the Red Fairy Book, the Green Fairy Book, the Yellow Fairy Book, the Pink Fairy Book, the Grey Fairy Book, the Violet Fairy Book, the Crimson Fairy Book, the Brown Fairy Book, the Orange Fairy Book, the Olive Fairy Book, and the Lilac Fairy Book.

I’ve never heard of those fairy books, what I WAS channeling when I thought of that was the dust jackets on the Narnia hardcovers that my wife has had for years.

I’ll gladly pass on my share of the prize (wouldn’t let me reply below – links are too deep already) – The fun is in the hunt. Like going around work asking about some old movie or TV show – there were several of us when I was Navy who would do that at sea as the result of conversations. (Can’t Google in the middle of the ocean.)